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3624 AQUAMARINE DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath3,218 sqftBuilt 2008

Property at a Glance

This home is estimated between $494,466 and $1,296,973, with a best estimate of $1,013,279. That places the property above the R147606C - WALSH RANCH median of $933,667, in a neighborhood that declined 4.6% over the past year.

Estimated Value Range

$494,466 $1,296,973
Best Estimate
$1,013,279
WCAD Value
$822,600
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in R147606C - WALSH RANCH. The estimated range of $494,466 and $1,296,973 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 3,097 sqft Built 2000
Raw Value $556,425
Adjusted Value $494,466

Adjusted +$49,202 for 121 sqft more living space and -$111,161 for being older. Net adjustment: -$61,959.

4 bed 2 bath 3,110 sqft Built 2000
Raw Value $572,254
Adjusted Value $505,009

Adjusted +$43,916 for 108 sqft more living space and -$111,161 for being older. Net adjustment: -$67,245.

3323 MARCASITE DR, ROUND ROCK, TX 78681
0.00 mi 95% similar Same subdivision
4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $1,296,973

Adjusted +$406,219 for 999 sqft more living space and -$13,895 for being older. Net adjustment: +$392,324.

3 bed 2 bath 2,221 sqft Built 2014
Raw Value $741,595
Adjusted Value $1,230,372

Adjusted +$405,406 for 997 sqft more living space and +$83,371 for being newer. Net adjustment: +$488,777.

3 bed 2 bath 2,248 sqft Built 2018
Raw Value $479,901
Adjusted Value $1,013,279

Adjusted +$394,427 for 970 sqft more living space and +$138,951 for being newer. Net adjustment: +$533,378.

The Neighborhood

This home is valued 11.9% below the R147606C - WALSH RANCH median of $933,667. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 4.6% over the past year.

R147606C - WALSH RANCH

typical
239 Properties
$933,667 Median Value
-4.6% YoY Change
0% Have Pool
100% Have Garage
This Home
$822,600
Median
$933,667

This home is -11.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $15,405 across all districts. With a homestead exemption claimed, that drops to $14,003 — saving $1,402 per year. That's $1,167 per month a buyer should budget. The assessed value increased roughly in line with the neighborhood, so a tax protest is unlikely to yield significant savings.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$7,347
Williamson CountyCounty0.3694%$3,039
Walsh Ranch MUDMUD0.3455%$2,842
Austin Community Collegespecial0.1034%$851
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$823
Williamson County FM/RdCounty0.0443%$365
Upper Brushy Creek WCIDWater0.0170%$140
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8728%$15,405

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,013,279 would pay approximately $6,325 per month (principal and interest only, excluding taxes and insurance).

Data sourced from Williamson County Appraisal District (WCAD), Texas Education Agency (TEA), and Federal Reserve Economic Data (FRED). Assessment values reflect the appraisal district's estimate, not market sale prices. Report generated 4/18/2026.

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